- Correspondence to Dr Karin Hellgren, Rheumatology Unit, Department of Medicine, Solna, Karolinska Institutet at Karolinska University Hospital, 171 76 Stockholm, Sweden;
- Received January 27, 2016
- Revised April 3, 2016
- Accepted April 9, 2016
- First published May 4, 2016.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.